Automatic sash-lock.



J. H. BARTON.

AUTOMATIC SASH LOCK.

APPLICATION IILED OUT. 9, 1914.

Patented Mar. 23, 1915.

IN VE/V ro/a dsse/Yfiar/m WITNESSES A TTOR/VEYS' THE NORRIS PETERS C0PHOT O-LITHOH WASHINGTON, D.

JESSE H. BARTON, OF BROWNSVILLE, TENNESSEE.

AUTOMATIC SASH-LOCK.

Specification of Letters Patent.

Patented Mar. 23, T915.

Application filed October 9, 1914. Serial No. 865,824.

To all whom it may concern:

Be it known that T, Jnssn H, BARTON, a citizen of the United States, anda resident of Brownsville, in the county of Haywood and State ofTennessee, have invented a new and Improved Automatic Sash-Lock, ofwhich the following is a full, clear, and exact description.

This invention relates to new and useful improvements in sash locks andmore par ticularly to an improvement upon the structure illustrated inmy Patent No. 879,078 dated February 11, 1908, in that the device isautomatic in its operation in engaging and holding the sashes againstmovement, that is, to prevent the upper sash from being lowered and thelower sash from being raised.

A further and important object of the invention is the provision of animproved automatically actuating sash lock which,

generally speaking, includes means carried by the upper sash and movabletherewith to jam against the parting strip of the frame, and a novelspring-actuated engaging member carried by the top of the lower sash tocooperate with the first mentioned means to prevent opening of thesashes in the manner heretofore specified, unscrupulously or otherwise,from the exterior or outside whether the sashes are closed or partlyopen and in such a manner that the sashes can be held in differentadjusted positions or open at varying degrees, as for instance, forventilating purposes, while means are also provided so that thepossibility of releasing the sash look by a wire or other instrumentpassed between the sashes is obviated.

With the above and other objects in view, the invention resides in thepeculiar combination and arrangement of partsto be hereinafter morefully described, illustrated and claimed, it being also an object toprovide a device which is simple in construction, durable and efficientin operation and not likely to get out of order.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views, and in which Figure 1 is ahorizintal sectional view of a window frame having sashes movabletherein and equipped with my improved sash lock, the section being takenon the line 1---1 of Fig. 2; Fig. 2 is a sectional view taken on theline 22 of Fig. 1; Fig. 3 is an enlarged fragmentary inside elevation ofportions of the frame and window sashes equipped with the improvement;Fig. 4 is a reverse view of that shown in Fig. 3, with a portion of thehandle or lever removed; and Fig. 5 is a vertical sectional view takenon the line 55 of Fig. 4C.

In illustrating the application of the invention there is shown a windowframe having sashes slidable therein, the frame for this purpose beingprovided with outer beading strips 11, parting strips 12 and removableinner beading strips 13 providing guideways 14 and 15 in which the upperand lower sashes 16 and 17 are respectively vertically slidable. Theparting strips 12 thus separate the upper and lower sashes and a rod 18is fastened vertically to one side of the upper sash in any suitable waysuch as by means of staple ends 19 directed at right angles to thelength of the rod which is illustrated as provided with serrations 20 onits inner face substantially throughout its length. This rod is fastenedto the sash 16 after the same is pressed as far to the opposite side asis possible without interfering with the free movement of the sash, sothat the rod will jam or engage against the adjacent parting strip atthe inner edge of the latter. The other part of the sash lock whichcoiiperates with the serrated rod or bar comprises an angular bracket 21which is secured to the top of the lower sash at one side by suitablefastening devices which may be in the form of wood screws 22, and saidbracket is provided with a vertical bearing support 23 at its outer endterminating in a sleeve extending half way across the Width of thebracket and reinforced by a central web 24 to add strength thereto. Acam in the form of a circular cap-like shell 25 is pivotally mountedeccentrically in the sleeve of the support 23, the pivot 26 thereofbeing engaged through the sleeve and held against rotation by suitableanchoring means which may take the form of a cross pin 27 passingthrough the sleeve and pivot.

The shell or hollowed-out circular member forming the cam or eccentricis provided on its outer edge with serrations or corrugations 28disposed transversely thereof to cooperate with the serrations of therod The outer end of the pivot is headed as shown at 29 and transverselygrooved as shown at 30 to receive one end of an expansible coiled spring31 which encircles the head of the pivot within the shell and has saidend anchored to the pivot by upsetting the latter at either side of thegroove 30 as shown at 82, while the other end is anchored in anapertured ear 88 stamped out of and bent in from the face portion of thecam diametrically opposite to the center thereof with respect to thedisposition of the pivot 26. Inthis manner the end of the springattached to the pivot is held against movement so'that expansion of thespring results in the rotation of the cam on its pivot in a clockwisedirection or .in a direction toward the rod turning downward, wherebythe serrated portion of the cam will be caused to engage the serrationsof the rod and thus hold the sashes in any adjusted positions verticallydue to the frictional engagement and co-action between the serratedfaces.

Should an attempt be made to lower the upper sash when it is entirelyclosed or partly lowered, the cam, by reason of its engagement with therod as downward pressure isexerted upon the lattersowing to it beingcarriedbythe upper sash, will be turned on its pivot in a clock-wisedirection and cause the point of greatest eccentricity thereof to bindagainst the rod and parting strip with greater pressure than exerted bythe spring, and thus prevent the upper sash from being lowered. Anattempt to raise the lower sash when the same is entirely closed orslightly raised will similarly result in the turning-of the cam tofrictionally engagej with the rod and causethe rod to be jammed againstthe parting strip whereby raising ofthe lower sash is also prevented andthus the upper and lower sashes may be sufficiently lowered and raisedrespectively so as to allow ventilation without endangering the safetyof the occupants of a room or house. However, the upper and lower sashesmay be readily raised and lowered, respectively, for closing the samefrom the inside or outside so that as it is impossible to open thesashes from the outside, an attempt to raise both of the sasheswouldresult in the closing of the top sash but it will be impossible toraise the lower sash. Should an attempt be made to lower both sashes thelower sash would then be closed and it would be impossible to lower theupper sash so that both would be closed and the locking means would beinaccessible.

In order to permit convenient releasing ofthe cam or look, a handle orlever 3a is removably attached to the cam and for this purpose the leveris provided with a curved endportion 35 to fit around the bearing sleevereceiving the pivot, and the inner end of the lever is directedlaterally as shown at 36 to provide a lug which extends through a slot37 in the face portion of the cam or eccentrically mounted disk. Thelever is further provided with a pin 38 projecting laterally therefromin the same direction of extent as the lug 36 to engage a perforation oropening 39 through the cam or disk. The free end of the lever isapertured as shown at 40 to permit the attachment of a pull cord orchain for conveniently operating the lever to release the look ifnecessary or desired, although ordinarily this will not be needed. henthe lever is attached to the cam in the manner described it is held fromdisplacement by a pivoted button 4.1 which is offset to extend over thelever and which can be turned out of the path of the lever in order topermit the latter to be displaced when the window is locked. Theadvantage of this is that when the sashes are both open or when theupper sash is slightly lowered, any attempt to insert a wire orinstrument between the sashes or under the lower sash to engage thelever for releasing the look by pulling downwardly thereon, will beobviated owing to the fact that it will be impossible to catch hold ofthe cam with the lever removed. In addition, the lock will jam both ofthe sashes against the window frame opposite the side to which the lockis disposed to hold them tight and the releasing of the lock will permitthe sashes to be operated. This is due to the fact that the lock willprevent the window from rattling and therefore will serve the additionalfunction and prevent the entrance of cold air into the room or rooms inthe winter. It will thus be seen that an attempt to enter from theoutside will result in the closing of the window and should anunscrupulous intruder cut the glass in order to operate the lock it willbe impossible to raise the sash because as fast as the lock is displacedit will at once move into locked position automatically. Ordinarily itwould be unnecessary to remove the lever owing to the great distancebetween the top and bottom portions of the sashes.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In combination with an upper and lowerwindow sash separated by a parting bead, a sash lock comprising abracket secured to the top of the lower sash, a cam journaled on thebracket, a rod attached to the upper sash and between the cam and theparting bead, means for normally holding the cam in engagement with therod and a lever for operating the cam to release the same from the rodand remove the binding engagement of the latter with the parting bead.

2. In combination with an upper and lower window sash separated by aparting bead, a sash lock comprising a bracket secured to the top of thelower sash, a cam ISO 1,1ae,a17 111 journaled on the bracket, a rodattached to the upper sash and between the cam and the parting bead, andmeans for normally holdingthe cam in engagement with the rod.

3. In combination with a window frame having sashes slidable therein, adevice carried by one of said sashes to bind against the frame and meanscarried by the other sash for binding said device against said frame tohold the same, whereby both of said sashes are frictionally lockedwithin the frame, said means being normally held in looking position.

4. In combination with a window frame having sashes slidable therein, aserrated rod carried by one of the sashes and spring actuated meanscarried by the other sash for binding against said rod to causefrictional engagement of the latter with the frame whereby both of saidsashes are frictionally locked within the frame.

5. In combination with a window frame having sashes slidable therein, aserrated rod carried by one of the sashes, spring actuated means carriedby the other sash for binding against the rod to cause frictionalengagement of the latter with the frame whereby both of said sashes arefrictionally located within the frame and permitted to be closed withoutinitially or independently releasing said spring actuated means andmeans for operating said spring actuated means to release the same andpermit opening of the sashes.

6. In combination with a frame having sashes slidable therein, a camcarried by one sash, means carried by the other sash arranged betweenthe cam and window frame, means for revolving the cam to bind saidfirst-named means to the frame and normally holding said sashes lockedand means for turning the cam in the opposite direction to release thesame.

7. In combination with a frame having sashes slidable therein, a camcarried by one sash, means carried by the other sash arranged betweenthe cam and window frame, means for revolving the cam to bind saidfirst-named means to the frame and normally holding said sashes lockedand a lever removably connected to the cam to release the same, said camcomprising an eccentrically mounted shell inclosing said secondnamedmeans which normally holds the cam in looking position.

8. In combination with upper and lower window sashes operable in a frameand separated by a parting strip; a serrated rod attached to andprojecting from the upper sash at one side to jam against the partingstrip and hold the sash displaced toward the opposite side of the frame,and means carried by the top of the lower sash normally cooperative withsaid rod to hold the sashes against opening movement but adapted topermit the same to be freely closed without manually releasing saidmeans.

9. In combination with upper and lower window sashes operable in a frameand separated by a parting strip; a serrated rod attached to andprojecting from the upper sash at one side to jam against the partingstrip and hold the sash displaced toward the opposite side of the frame,a bracket secured to the top of the other sash at the side adjacent tothe rod and having a sleeve portion, a headed pivot removably held insaid sleeve portion, a shell-like disk eccentrically mounted on thepivot, an expansible coiled spring anchored to the pivot head and to thedisk within the latter and normally holding the point of greatesteccentricity of the disk in engagement with the rod, the edge of thedisk at said point being transversely corrugated and a handle attachedto the disk for disengaging the same from the rod, the disk when inengagement with the rod serving to jam the latter against the partingstrip whereby an attempt to open the sashes will result in thetightening of the disk against the rod and further jamming of the latterwith the parting strip to prevent opening of the sashes while permittingthe closing thereof against the action of the spring.

10. In combination with upper and lower window sashes operable in aframe and separated by a parting strip; a rod attached to and projectingfrom the upper sash at one side to jam against the parting strip andhold the sash displaced toward the opposite side of the frame, a bracketattached to the top of the lower sash at the side adjacent to the rodand having a reinforced vertical portion, a pivot carried by theportion, a disk eccentrically mounted on the pivot, spring means tonormally cause the disk to bindingly engage with the rod in a downwarddirection to lock the sashes against opening movement and a handleremovably attached to the disk for releasing the disk against the actionof the spring to permit opening of the sashes.

11. In combination with upper and lower window sashes operable in aframe and separated by a parting strip; a serrated rod attached to andprojecting from the upper sash at one side to jam against the partingstrip and hold the sash displaced toward the opposite side of the frame,a bracket attached to the top of the lower sash at the side adjacent tothe rod and having a reinforced vertical portion, a pivot carried bysaid portion, a disk eccentrically mounted on the pivot, spring meansbetween the pivot and the disk to normally cause the disk to bindinglyengage with the rod in a downward direction to lock the sashes againstopening movement, a handle for releasing the disk against the action ofthe spring to permit opening of the sashes, said In testimony whereof Ihave signed my handle being removable, and means carried name to thisspecification in the presence of by the disk to hold the handle fromdistWo subscribing Witnesses. placement outwardly from the disk or per-JESSE H. BARTON. 5 mit removal thereof as desired, said handleWitnesses:

vbeing provided for the attachment of a pull W. H. J OYNER, cord orchain.

J. F. THOMAS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 0! Patents,

' Washington, D. 0.

